No video :(

Lithium batteries for beginners. Step by step: balancing, assembling, capacity test. LiFePo4 DIY.

Подписаться 22 тыс.

Просмотров 472 тыс.

50% 1

DIY busbars: • Make the best busbars ...
Tools and materials used in video:
Batteries LiFePo4 25Ah: s.click.aliexp...
Various raw cells: www.currentcon...
BMS 50A for LiFePo4: www.aliexpress...
Multimeter: amzn.to/3CC6vBk
Terminal connectors: amzn.to/3nZKNik
Crimper tool: amzn.to/3pDhse3
Battery capacity meter: amzn.to/38NNI79
Lab power supply: amzn.to/3jqhCCH
Wires 10 AWG silicon wires: amzn.to/38NN75p
Soldering iron 150w: amzn.to/37YrT5V
Liquid Flux Pen: amzn.to/2KPbyYe
Solder Wire: amzn.to/3o0V8dJ
3kw 48V inverter: amzn.to/3rEPEYA
M6 Thread nuts: amzn.to/3aRNKh3
As an Amazon Associate I earn from qualifying purchases.
As an Aliexpress Associate I earn from qualifying purchases.
Timecodes:
00:00 - Intro
00:36 - Parts used to build
01:40 - Cells unpacking
04:16 - cells balancing
16:56 - crimp BMS balancing wires
18:40 - 12/24/48V batteries configuration
21:05 - connect BMS to cells
23:54 - verify balancing leads connections
26:50 - solder BMS wires to battery
29:18 - turning BMS on
30:46 - capacity test
34:24 - capacity final result
35:10 - battery final overview
35:55 - balancing wires length
37:42 - subscribe

Опубликовано:

15 авг 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 729

@robinhughes-jones4034 2 года назад

Most exellent of you for not editing out the mistake in wiring the second set of sensors. It is so helpful for us to see how you approached and managed this uncomfortable situation in a thoughtful and precise manner. I applaud your humility.

@SolarEngineering 2 года назад

thank you for the feedback, appreciate it.

@fvanzlr 3 года назад

16:40 All the cells WILL indicate the same voltage as they are connected in Parallel. Only way to measure individual voltages is to disconnect either positive or negative terminals. The end result stays the same as you were trying to get the cell voltages closer to each other which you achieved by charging in parallel. The rest is very informative for the newcomer to LiFePo4 batteries. Good video sir.

@SolarEngineering 3 года назад

yeah I missed that step, thanks for letting me know. And thank you for kind feedback.

@lilwwwlil 2 года назад

))) that is what attention to detail is ! Although the mistake was obvious once you know .... but I did not see it until I read your comment !

@jdickson242 Год назад

Yep lol

@daveincanada4794 3 года назад

This might be the best video I have seen on DIY LiPO4 battery construction. Certainly the best explanation of the reason for balancing, differences between top and bottom balancing, etc. Very well done video!

@axoidmax 2 года назад

I agree. So many DIY videos that lack complete explanations. Also, seeing his mistakes is a good indicator of where things could go wrong, and, what to watch out for. Excellent Video. Thank you.

@leandrofranceschi322 3 года назад

The best splaning ever made. Congratulation! Very Good Work man!

@trezzadeng5839 Год назад

Best DIY LifeP04 so far, in a similar video to this, i have to go through about 5 videos just to see to the end.

@Absfor30 2 года назад

An excellent step by step breakdown for mere mortals who are interested in building their own packs, you have done exceptionally well with your presentation, taking the time to explain what is important along the way and WHY it is important as well. Thank you very much you have another subscriber.

@SolarEngineering 2 года назад

Much appreciated!

@hadisiswantoro2777 Год назад

Your description is very good. You explain step by step what must be checked before entering the next stage.

@SolarEngineering Год назад

Glad it was helpful!

@pewpewwithtodd8077 2 года назад

This was a great video, before I was confused about building a battery and now I'm ready to try it myself and I'll probably watch this a few more times.

@SolarEngineering 2 года назад

glad it was helpful.

@RandoRaf 2 года назад

This was the best explanation of how to build. You explained each step vs just rushing through.

@SolarEngineering 2 года назад

thanks!

@hafeexius 3 года назад

I'm in the process of converting my scooter to electric using the existing CVT (modified to reduce power losses). The mechanical part is a piece of cake for me but building the battery turned out to be a major headache. Thank you for explaining it in an easy to understand manner.

@SolarEngineering 3 года назад

nice, glad that video helped!

@johanwagho5257 10 месяцев назад

I'm on exact that same path with the same findings

@lmorchard 3 года назад

You probably didn't plan it, but making a mistake with one of the BMS wires at first was a nice demonstration of what and why you're testing the connections :)

@SolarEngineering 3 года назад

totally unplanned, glad that I didn't burn BMS

@whazzat8015 3 года назад

@@SolarEngineering You showed why it's important. Bravo!

@TheBluebird65 2 года назад

This also shows that any one even an electronics guru can overlook a detail that could cost and shut down a project. Great demo of double checking your work. The signs of a good teacher that is unafraid of admitting he is human. Thank You. I now feel obligated to subscribe.

@whazzat8015 3 года назад

Good video. helps with troubleshooting too. Importance of balancing was well discussed, as was BMS and care in installation. Good to make an error and demonstrate recovery. I would add 1) mention how you were careful with box cutter, 2) verify that the brass/silver = -/+ was true polarity in ALL cells, 3) I work in an area where a fire could be easily controlled, or at least reacted to. 4) drop your deep socket and watch out! short city 5) wiring for charger on the inside of terminals? asking for trouble.loose wire ,ditto. 6) "I don't see smoke. Good" Strong work

@SolarEngineering 3 года назад

really good points, thanks

@calvinflager4457 Год назад

Just came across your video showing how you build a LFP battery. EXCELLENT! Wish I'd had it before I built mine, although they are working wonderfully. thanks again.

@SolarEngineering Год назад

glad it was helpful!

@DStein-jn9ls 2 года назад

Thank you for this video. It is (by far) one of the most helpful and informative videos on batteries I have seen! I'll be coming back to this a lot as I build my own.

@SolarEngineering 2 года назад

appreciate your feedback

@WikkidDJ 21 день назад

I realize tha this video is 3 years old, but I just discovered the "magical" difference that Lithium Iron Polyomer has compared to Lith-Ion I have been using. I know that there is a chemistry that requires the pack have a constant positive pressure. Is that LiPo that I am thinking of? And if this video is 3 years old, what are you up to these days? My subscription is earned. #trustory

@ivanhoe6366 3 года назад

Thanks for taking time to share your knowledge.

@randeb1974 3 года назад

Looking forward to working this out. Randy. helperdude2016@gmail.com

@johanwagho5257 10 месяцев назад

Got to give the credit were it is due... and sure its due to you, best teach skills I've seen by MILES (and I've watched not hours but weeks on tuts) best aproach...viewers know nutn 🙂and you did nicely xplained point after point no MORE or LESS info and a clear and good view on the task at hand, I know when reading these three lines it dnt look like a big deal but its a fact that the most cant cant get that tutorial vid just right... soooo, not the teacher but THE MASTER 🙂 🙂

@SkypowerwithKarl 3 года назад

When you top balance, use #10 or larger leads from the power supply, put terminals on both ends and don’t use it the banana plugs or alligator clips. Connect the leads to the two common rail taps but at opposite ends so no path is shorter or longer than another. Not at the center as shown during balancing.

@SolarEngineering 3 года назад

good to know, thanks for the advice.

@Base612 2 года назад

"OK. I don't see smoke." LOL This was an *excellent* video. I learned a lot. Thanks so much.

@SolarEngineering 2 года назад

Glad to read that! Thanks.

@BriTube007 3 года назад

At 16:36 you are testing cells connected in parallel so you are not checking the voltage of an individual cell, rather you are checking the voltage across all the cells. The reading will be the exact same along the wires (baring a large current moving through a small wire causing a voltage drop). Also you initially set the power supply to 3.6V in the hopes of charging them to 3.65V which can't happen. I see later on that you increased the power supply voltage to 3.7V.

@pieterh2058 3 года назад

This is what I noticed also immediately. Just checked the comment to see if i was the only one. Does this guy know what he is doing?

@LoekiNL 3 года назад

also the testing of the 4 feet wire on the end. he does not know what copper resistance is, or at l;east does not know the voltmeter is of high resistance, so in test it does not matter. with ballancer you will have current and so will have copper resistance that is relatively more important.

@ianworthington2324 3 года назад

@@LoekiNL These were my two criticisms as well. Though in the case of the BMS sensor wires I'm guessing that the BMS current draw is not high enough to produce any significant voltage drop.

@belspace 3 года назад

The best explanation in youtube on DIY battery pack ! 👍

@SolarEngineering 3 года назад

appreciate your feedback

@elwynneri1891 Год назад

thanks for this video. thanks for this. the mistake is a humble process that you did not remove. It will also help me to be careful. thanks much and God bless you.

@SolarEngineering Год назад

glad it was helpful!

@ajgonzalez9926 Год назад

Hey bro how long take them to ship to you?.

@TeoCorrales 3 года назад

Thanks for the video, it's very educational for a person like me without any experience.

@SolarEngineering 3 года назад

thanks for the feedback.

@engrevergreenifeanyiohaegb4188 2 года назад

@@SolarEngineering good work

@sxmplx5356 2 года назад

Wow I'm learning more from this! May you live longer SIr!

@SolarEngineering 2 года назад

thank you for the feedback!

@erdenertorer 3 года назад

I might be missing something. @16:22 you are measuring the individual cell voltages but they are all parallel connected. Isn’t that the reason all the voltages are pretty much the same? Wouldn’t that be better if you remove the wire and measure them individually? Thanks!

@SolarEngineering 3 года назад

that's correct, missed this step, busbars should be disconnected.

@paullazo19 3 года назад

Very thorough. Thank you!

@gaetangagnon5913 2 года назад

Thank you very much for your videos. I happen to have to do mine with 8 batteries and this video will be very helpful. Thanks again.

@SolarEngineering 2 года назад

glad it was helpful!

@charleswhitehead7441 2 года назад

Your remark about shortening the BMS wires is true if they are only used for measurement but not neccesarily true if they are used for cell balancing. When you measured with your meter you are only loading the battery with a 10M Ohm load so drawing 50 microamps. If the BMS is active balancing it can only read the voltage at its end of the wires and you will get some voltage drop across these wires which will be different if they are different lengths.

@davekendall4698 3 года назад

Very impressive & informative I liked the info in the drop down too. Links/time codes etc. Got my mind working overtime now.⚡️

@SolarEngineering 3 года назад

thank you for the feedback!

@luckydogfarms 2 года назад

Always learn more when I watch your videos! Thanks, J

@SolarEngineering 2 года назад

thanks!

@murzello 3 года назад

Спасибо за тест. Не согласен только с последним доводом - провода от BMS до ячейки обрезать по длине не рекомендуется. При использовании ячеек необходимо снять все наклейки с предохранительных клапанов что между клемами. Час назад сделал заказ на 16 штук (по вашей ссылке). Собственно от туда я сюда и пришел)) Еще раз спасибо за видео и всего наилучшего!

@TK-123 2 года назад

Shorting the wires has no negative effect. Your just measuring voltages, hence very small currents..

@neliosamch3195 3 года назад

And that is how it is done to save have the price of a solar generator. Very good.

@SolarEngineering 3 года назад

yep, planning to release another video soon about solar generators.

@usurpinesusanti3149 3 года назад

The parts with shipping for my 24V 200ah Battery is about 800.- plus bms and small parts all in all less then 1000.- € against some commercial resellers who wants to get 4500.- for the same setup. I also bought 2x 290 Wp Solar cell for 90.- plus a mppt 200/20 with price tracker from amazon for 130.- So all in all i can now build up a great solar system with 580Wp and 200ah Batterie for less then 1400.- against commercial seller who made me offer with minimum prize 6500 .- up to 8000.- and many weeks waiting time. Sometimes its really worth watching videos and diy it yourself. And if anything fails while i am on the road i can fix it myself and have a deeper understanding whats going on.

@neliosamch3195 3 года назад

@@usurpinesusanti3149 absolutely, I agree. I build myself a powerwall that I would have not been able to afford for less than 5k.

@chukslis3486 3 года назад

This is a wonderful explanation. It is most interesting the mistake you made in connecting the balancing cables. This has been my worry though I wire correctly but I imagine what would happen if such error occurs. Thanks greatly for sharing the video.

@SolarEngineering 3 года назад

thank you for the feedback!

@viko2812 3 года назад

Красиво получилось. Одно замечание. Между банками классно бы поставить листы диэлектрика. Сами банки у вас подключены между собой шинами. В случае если перетрется, оплавиться, расплавиться, да что угодно случиться с изоляцией самой банки у вас будет К.З. И в отличие от ленты из никеля контакт хороший. Можно еще подумать о плавких предохранителях. Но, это уже на любителя. П.С. Спасибо за видео.

@SolarEngineering 3 года назад

спасибо за совет и за отзыв.

@PeterHelenefors Год назад

Thank you! Appreciate you really explaining each and every step so thouroughly.

@TK-123 2 года назад

Top shelf instructions. Thank you for your clear, and concise directions..

@SolarEngineering 2 года назад

your feedback is much appreciated.

@jonathanneethling 2 года назад

Best video I’ve seen so far

@SolarEngineering 2 года назад

Thank you.

@PawlSpring 2 года назад

I am about to tackle a similar project with 48(!) prismatic cells. This video is perfect timing 🙂

@SolarEngineering 2 года назад

48 in series??

@PawlSpring 2 года назад

@@SolarEngineering Not quite. Ultimately a 16S3P, but they have to be top balanced.

@SolarEngineering 2 года назад

@@PawlSpring ah I see, I have same bank 3p16S. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RB_O_5Ppv7g.html

@RapidCRM 2 года назад

Excellent - I have bookmarked this and deleted all the other 'popular' explanations.

@SolarEngineering 2 года назад

Glad it was helpful!

@MrMastercc 7 месяцев назад

brilliant step by step video tutorial. well done

@joatmofa0405 2 года назад

VERY GOOD VIDEO - everything is carefully planned for easy explaining! A near perfect explainer video. I suspect your channel is very underrated - as an electrical engineer myself, I have a feeling that it won't take long for your channel to grow exponentially! Subbed & Liked!

@SolarEngineering 2 года назад

haha, I wish your words become a reality :) Thanks for the feedback.

@izemanevobike 3 года назад

30:00: "I don't see smoke ...". Sounds so familiar to me :)

@omaha42000 3 года назад

Excellent. Thank you. You are a scholar and a gentleman.

@SolarEngineering 3 года назад

thanks :) appreciate ffedback

@safewilliamp.assist.tec.8203 3 года назад

Thank you very much!!! The best explanation that Ive ever seen!

@SolarEngineering 3 года назад

appreciate your feedback.

@om617yota8 3 года назад

Fantastic build, thank you for posting!

@mohsinrazaengr Год назад

Excellent demonstration.

@SolarEngineering Год назад

thank you

@AandABlackmoore 3 года назад

I would like to say thank you very much I thought your video was very good I found that you explained everything very well from start to finish Cheers Anthony

@SolarEngineering 3 года назад

Thanks Anthony.

@ppi57 2 года назад

I tried charging a 12v 280Ah Lifepo battery (internal BMS not bluetooth) at 14.2 v & 4.5A and smoked my cheap Alibaba (30v/5a) PSU in 30 seconds... what went wrong?

@runneryg 11 месяцев назад

I LOVED THE VIDEO AND I LIKE THE CELLS A LOT I WILL BUY THIS BATTERY AS I THINK THEY ARE THE BEST ALSO TRY AND BUY THE THINGS I NEED AND GIVE IT AGO FOR £500 OR JUST UNDER 24 VOLT 2OO AH IS WHAT I AM LOOKING FOR PLUS I BE SAVING FROM BUYING IT ALL SETUP. I AM SURE I WILL COME TO THIS FOR MORE INFO IN THE FUTURE TO SHOW ME HOW TO SET IT UP CORRECTLY LOVELY EXPLANATION ON HOW TO SET IT UP.

@mfrutos 3 года назад

What a Lesson professor! Cheers from Brazil!

@SolarEngineering 3 года назад

)) thanks

@MrRalph301 3 года назад

Thank!, you very well explained,it claered many questions I had.

@fatauntie 7 месяцев назад

Thank you for your video. Great information that is easily understood. Well done! Looking forward to your other videos.

@dantronics1682 3 года назад

here is a quick tip, connect all batteries in parallel initialy for a couple of hours before connecting them in series, they will all equalise to the same voltage

@wanderingzythophile9083 3 года назад

I was gonna say... isn't he missing a step here, which is just leaving the whole pack set up in parallel, with the copper wires, for a while to let all the cells balance out on their own? I'm still learning this stuff myself but seems this is what other DIYers do.

@juergwyser6520 3 года назад

Very professionally explained! Thanks you. One question: what resistor do you use to avoid the spark at the convertor and where do you connect it to discharge the spark?

@SolarEngineering 3 года назад

for 12v use 12+Ohms 24v - 24+Ohms 48v - 48+Ohms this type of resistance will allow only 1 amp to flow. You just need to do it once when connecting wires to inverter terminals.

@princeeze9414 8 месяцев назад

How can I get this product

@geeuk 3 года назад

Brother excellent detailed video you have answered all the questions in my head on how to start off lifepo4.. Many Many Thanks for your videos! Happy New Year. Gokhan from London

@SolarEngineering 3 года назад

appreciate your feedback

@lucianpopescu1786 2 года назад

Very nice build. Very organized. I like it. Big thanks for the information

@SolarEngineering 2 года назад

thanks for the feedback!

@waynewilliamson4212 3 года назад

enjoying the video, one comment, checking the individual cells when they are still connected in parallel will give the same voltage for every cell. It doesn't matter which one you check, you are really just checking all, every time ....

@SolarEngineering 3 года назад

yeah, missed this part. thanks for letting me know.

@kevinandersson4882 3 года назад

Thank you for The good explaining and moore, it's easy to think that you maybe are a University teacher or something... Greatings from SWEDEN for a very PRO Channel! 😀

@SolarEngineering 3 года назад

thank you for the feedback!

@toolate6971 2 года назад

I am just getting started and this was a great video for me.

@usurpinesusanti3149 3 года назад

Thank You for this very good video, its exactly what i am planning to do, already have ordered cells from China an BMS which looks almost exactly the one in your video. Very good explanation and very helpful indeed. I feel now much better prepared to do it right and i am not a professional at all. You did a very good job with this video.

@SolarEngineering 3 года назад

appreciate your feedback.

@MarkEatmon 3 года назад

Thank you doing this video. Even your mistakes are good for this video

@SolarEngineering 3 года назад

yeah, I thought it's a good thing to leave in video, to see how easy is to make mistake

@tylerb9808 3 года назад

I'm glad you included that overlook. It shines a light on how important it is to double check things. Even if you fried your bms, the lesson would be long learned. And I really appreciated the texts on the screen as you moved along. I made notes! Helped me understand C ratings a lot better. Thanks!

@MadStylesGooffy 3 года назад

Nice build! Very informative!

@SolarEngineering 3 года назад

thanks

@meganote 3 года назад

Very good explanation of balancing! Thanks.

@SolarEngineering 3 года назад

thank you

@muharremcan2662 2 года назад

merhaba . 60 & 72 v bir sistem kurasaydınız izlenme oranlarınız çok daha fazla olurdu.Bu videoda çok başarılı olmuş. çok fazla emek harcadınız.teşekkürler.

@cvdheyden 2 года назад

Fantastic Video! Very informative and educating! Only small suggestion I have: It helps the batteries to last longer if you compress, but I think you know that already.

@ludlow7369 Год назад

compress? He might know but we might not... Compress what? The cells to each other? My butt cheeks?? ?

@cvdheyden Год назад

@@ludlow7369 Your testicles

@hansdybka1331 3 года назад

I have learned so much from your presentation, thank you. Excellent presentation of data with the discharge rate chart...helped me understand the issue exactly, also pointing out the different battery configurations possible...you covered alot and helped me immensly.

@dharmasagarpatil8485 3 года назад

Thank and very nice demonstration about BMS!! Thanks

@mar1video 3 года назад

Very nice video. I like your soothing voice and good explanations. Subscribed !

@SolarEngineering 3 года назад

thanks

@briansaul7352 3 года назад

At 16.24 you check the individual cell voltage of 16 cells connected in parallel (joined by 4 strand copper wire ). How do you measure individual cell voltage if cells are still connected in parallel? It also appeared that the power supply was still connected. If the cells are still in parallel and you measured a different voltage on one cell then you have a big problem.

@pieterh2058 3 года назад

Yes a big problem. The only reason you would measure a difference is when the wire used to connect them in parallel has a big resistance ;-)

@The.2.Minute-Man 2 года назад

Hi from Australia Very Very much enjoyed you video , Great information and easy to listen to. And professionally presented ............. Extremely helpful A big thank you ( Liked and Subscribed )

@701theboop5 3 года назад

Excelland job showing how it all works !!

@tarekabighanem3125 2 года назад

Excellent work and explaining

@SolarEngineering 2 года назад

Glad you liked it

@peshawarzulmi6451 3 года назад

Very professionally explained! Thanks you.

@SolarEngineering 3 года назад

thanks for the feedback.

@abelramos8652 Год назад

You didn’t check the IR, why? Thanks for the video my friend

@AsailingDIYlifechannel 3 года назад

Lovely - thank you so much for this very in-dept description

@SolarEngineering 3 года назад

thanks!

@ionutcatalin525 7 месяцев назад

Nice explaning, whery good video!

@andreasv5517 5 месяцев назад

What resistor to precharge is used? Top explained, to the point! Thank you!!

@SolarEngineering 5 месяцев назад

For 48V 30-60 ohm will work thank you for kind feedback

@peter572 3 месяца назад

I think that the the zip ties do not provide enough tension for compressing LiFePO4 cells (specs for much larger cells recommend >300 kgf). Anyway, some compression is better than no compression. Front & back plates would distribute the compression force far more evenly.

@GeekGarageDK 3 года назад

that cutoff would I guess be because of the cutoff settings i think your BMS came preconfigured for LiPo instead of LiFe and there is a huge cell voltage difference. LiFe is 2.5v - 3.7 where LiPo is 3v - 4.2v

@mbu745 Год назад

Good video. I learned a lot. Thank you very much.

@SolarEngineering Год назад

Glad it was helpful!

@MrGarda42 3 года назад

OMG I LOVE that accent!!! 🍻 Great video mate ✌️✌️

@SolarEngineering 3 года назад

appreciate your feedback!

@leandersmith6184 3 года назад

Very good and clearly explained. Thanks you got yourself a new subscriber.

@sunnyhongkong 7 месяцев назад

Other people's just play but you are real guy

@romanstangl8655 3 года назад

Regarding the length of the balancing wires, of course when you compare the voltage at the battery terminals and when using wires (AWG24 in your example) between the battery and the Voltmeter, you won't see a difference because the Voltmeter draws almost no load. But if the BMS adjusts the voltages between battery cells with e.g. 5 Ampere, then different lengths of the balancing cables might make a difference. Because due to Ohm's law, the voltage / power loss in the cable is I*R / I*I*R, that is, the power loss increases quadratically with the current. So that the BMS senses the cell voltages under the same conditions, I would recommend not to use different cable lengths.

@SolarEngineering 3 года назад

I know only one active balancer that could do 5 Amps, this balancer going with really thick wires. Most of the BMSs have passive balancers and only draw mA to balance cells. But you are right it's worth mentioning that equal length balancing wires could be required for some applications. Thanks.

@Labeeman 3 года назад

You are correct most BMS only draw 65 MA but that will cause a voltage drop of a few MV but the BMS is measuring MV and can cause the BMS to not balance correctly if the leads are not the same length.

@poneill65 8 месяцев назад

Ooof,.. hand tightening those nuts with that long slippery metal socket is giving me the willies! I'd definitely not trust myself to NEVER fumble that and kablooey! I think I'd have to put some insulating (and grippy) sleeve over that,.. like heat shrink tubing.

@harrydavis6461 3 года назад

Looks great. Thanks for the video.

@SolarEngineering 3 года назад

thanks!

@marioescalona1640 2 года назад

Very good thank you. Just one comment on the last part of wire lengths you may be right but the way you tried to demonstrate it is not accurate IMO due to the high voltmeter impedance it will not draw any voltage drop however that may not be the case of the BMS.

@joselito7776 3 года назад

Thank you. This video has just the right amount of detail that I was looking for re: how to create my own LiFePo4 battery bank. The excellent video/audio production quality is an added bonus. New subscriber here. PS: But I'm unsubscribing if I get shocked in the process! Just joking...

@SolarEngineering 3 года назад

)) thanks for the feedback

@scotthenderson4376 2 года назад

Very nice wish I knew were to buy all you need to do this. I need to build a 48v 200ah battery to replace my 48v 400 ah lead acid pack

@SolarEngineering 2 года назад

here is bigger bank build: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RB_O_5Ppv7g.html links in the video, feel free to ask question about tools/parts purchase

@michaeldodson879 3 года назад

Excellent battery build video.

@SolarEngineering 3 года назад

Thanks 👍

@ronniedelacruz6859 2 года назад

I'm not electrician mate but i think the best way and proper way to measure and get the exact voltage of battery after charging it together in parallel is to remove all the connection before re measuring it,,

@SolarEngineering 2 года назад

you are right

@TheDaztheraz Год назад

Am assuming if you connect 4 cells in parallel to give aprox 12v, you'd only need a bms for 4 cells as the voltage would be the same as they are connected together

@anunakizz 2 года назад

si lo uso en una bicicleta, bibrara y se expondra a constantes golpeteos po rlos baches del camino, todo esto degrada la vida util de las celulas?

@shakeelhuod6303 19 дней назад

Does 3.65 volts mean 100% charge and 3.4 volts will charge the cell to 80%? Or are 3.65, 3.5, or 3.4 volts the charging speed of the cell?

@pjr2481 Год назад

Ok you sir, just taught this man something new when it came to how a battery can be at 80% and another at 40% yet both can put out the same volts.

@leighcushing9484 Год назад

Very informative. I would say however care needs to be taken with these Aluminium case batteries. With some of them the case is connected to the -VE terminal of the cell. When the cells are stacked together if somehow the plastic wrap on the cells rubbs through it can cause a short and possibly a fire.

@fraserlynn9488 Год назад

What is the solution?

@leighcushing9484 Год назад

@@fraserlynn9488 Some of the cells I have seen have plastic caps that sit on top and bottom and this makes a gap (about 5mm) between the cells. This could be re-created using some type of insulator between cells.

@hampusjalkling2462 2 года назад

Great video, got the info I was looking for. Thanks a lot!

@SolarEngineering 2 года назад

Glad it was helpful!

@aguswijayagurumu 2 года назад

Priviet. Very good explanation. Thank you

@SolarEngineering 2 года назад

You are welcome!

@MacMcCabe2456 10 месяцев назад

Any suggestions to build a 36 volt battery for a EZGO Electric Golf Cart ? Thanks

@surmur 10 месяцев назад

If I want to charge this battery then does that happen through that x60 connector that goes directly to BMS? And If I want to power up some device then should I use the big end terminals on battery pack?